KR101313431B1 - Binuclear complex coating composition having excellent corrosion resistance, electric conductivity and lubrication - Google Patents

Binuclear complex coating composition having excellent corrosion resistance, electric conductivity and lubrication Download PDF

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KR101313431B1
KR101313431B1 KR1020110142123A KR20110142123A KR101313431B1 KR 101313431 B1 KR101313431 B1 KR 101313431B1 KR 1020110142123 A KR1020110142123 A KR 1020110142123A KR 20110142123 A KR20110142123 A KR 20110142123A KR 101313431 B1 KR101313431 B1 KR 101313431B1
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steel sheet
binuclear
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galvanized steel
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주식회사 포스코
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    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D183/00Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/02Polysilicates
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06Zinc or cadmium or alloys based thereon

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Abstract

본 발명은 내식성, 전기전도성 및 윤활성이 우수한 이핵복합 코팅 조성물에 관한 것으로, 상기 이핵복합 코팅 조성물은 티타늄-실란 이핵복합 화합물 3 내지 30 중량부; 폴리실리케이트 화합물 1 내지 10 중량부; 티타늄 방청 화합물 1 내지 10 중량부; 및 용매를 포함하고, 아연도금강판에 코팅되어 자기조립 단일막을 형성함으로써 우수한 내식성, 표면전기전도성 및 윤활성을 나타낼 수 있다. The present invention relates to a binuclear composite coating composition excellent in corrosion resistance, electrical conductivity and lubricity, wherein the binuclear composite coating composition comprises 3 to 30 parts by weight of titanium-silane dinuclear compound; 1 to 10 parts by weight of the polysilicate compound; 1 to 10 parts by weight of the titanium antirust compound; And a solvent, and coated on a galvanized steel sheet to form a self-assembled single film, thereby exhibiting excellent corrosion resistance, surface electrical conductivity, and lubricity.

Description

내식성, 전기전도성 및 윤활성이 우수한 이핵복합 코팅 조성물{Binuclear complex coating composition having excellent corrosion resistance, electric conductivity and lubrication}Binuclear complex coating composition having excellent corrosion resistance, electric conductivity and lubrication}

본 발명은 아연도금강판에 코팅되어 자기조립 단일막을 형성함으로써 우수한 내식성, 표면전기전도성 및 윤활성을 나타내는 이핵복합 코팅 조성물에 관한 것이다.
The present invention relates to a heteronuclear composite coating composition which is coated on a galvanized steel sheet to form a self-assembled monolayer, thereby exhibiting excellent corrosion resistance, surface electrical conductivity and lubricity.

아연도금강판용 크롬-프리 코팅은 우수한 내식성과 가공 윤활성 및 표면 전기전도성이 요구된다. 지난 10여 년 전부터 크로메이트 코팅을 대체하기 위해 많은 친환경 크롬-프리 코팅이 개발되었다. 그러나 대부분 고분자 수지를 기본 구성으로 한 유-무기 복합화합물 코팅으로 자동차 및 가전제품이 요구하는 내식성을 확보하기 위해서는 증가된 수지부착량을 필요로 하였다. 이에 따라 평판 내식성은 우수하나 표면 전기전도성과 가공부 내식성이 미흡한 경우가 대부분이다. 가전 및 자동차용 강판은 점용접성 및 전자기파 차폐를 위해 우수한 표면 전기전도성을 요구한다.
Chrome-free coatings for galvanized steel require excellent corrosion resistance, workability and surface electrical conductivity. Over the last decade, many environmentally friendly chromium-free coatings have been developed to replace chromate coatings. However, most of the organic-inorganic composite compound coatings based on polymer resins require increased resin deposition amounts to secure corrosion resistance required by automobiles and home appliances. As a result, plate corrosion resistance is excellent, but surface electrical conductivity and machining part corrosion resistance are insufficient in most cases. Steel sheets for home appliances and automobiles require excellent surface electrical conductivity for spot welding and electromagnetic shielding.

1. 국내공개특허 제2009-0140288호 "내화학성, 내식성, 윤활성이 우수한 크롬프리 표면처리 조성물 및 이를 피복한 내지문 전기아연도금강판의 제조 방법"1. Korean Patent Publication No. 2009-0140288 "Chromium-free surface treatment composition excellent in chemical resistance, corrosion resistance, and lubricity, and a method for producing anti-finish galvanized steel sheet coated thereon"

1. P. Innocenzi and T. Kidchob, T. Yoko, "Hybrid Organic-Inorganic Sol-Gel Materials Based on Epoxy-Amine Systems", Journal of Sol-Gel Science and Technology, 35, 225-235, 2005P. Innocenzi and T. Kidchob, T. Yoko, "Hybrid Organic-Inorganic Sol-Gel Materials Based on Epoxy-Amine Systems", Journal of Sol-Gel Science and Technology, 35, 225-235, 2005 2. M. Yamshita et al., "Growing Steel Sheets and Coated Steel Sheets", The 167th and 168th Nishiyama Memorial Technical Symposium, Tokyo, 1998, pp1582.M. Yamshita et al., "Growing Steel Sheets and Coated Steel Sheets", The 167th and 168th Nishiyama Memorial Technical Symposium, Tokyo, 1998, pp158

본 발명의 목적은 강판에 코팅되는 물질의 코팅량이 적으면서도 내식성 및 표면 전기전도성이 우수하고, 가공 시 프레스 윤활성이 우수한 이핵복합 코팅 조성물을 제공하는 것이다.An object of the present invention is to provide a heteronuclear composite coating composition having a low coating amount of the material to be coated on the steel sheet and excellent in corrosion resistance and surface electrical conductivity and excellent press lubricity during processing.

본 발명의 다른 목적은 상기 이핵복합 코팅 조성물이 코팅된 이핵복합 코팅 아연도금강판을 제공하는 것이다.Another object of the present invention is to provide a binuclear composite coated galvanized steel sheet coated with the binuclear composite coating composition.

본 발명의 또 다른 목적은 상기 이핵복합 코팅 아연도금강판을 경화시킨 이핵복합 코팅 아연도금강판을 제공하는 것이다.
Still another object of the present invention is to provide a binuclear composite coated galvanized steel sheet obtained by curing the binuclear composite coated galvanized steel sheet.

상기 목적을 달성하기 위하여, 본 발명은 용매 100 중량부에 대하여In order to achieve the above object, the present invention is based on 100 parts by weight of a solvent

티타늄-실란 이핵복합 화합물 3 내지 30 중량부;3 to 30 parts by weight of the titanium-silane dinuclear compound;

폴리실리케이트 화합물 1 내지 10 중량부; 및1 to 10 parts by weight of the polysilicate compound; And

티타늄 방청 화합물 1 내지 10 중량부를 포함하는 이핵복합 코팅 조성물을 제공한다.
Provided is a binuclear composite coating composition comprising 1 to 10 parts by weight of a titanium antirust compound.

본 발명은 또한 본 발명의 이핵복합 코팅 조성물이 코팅된 이핵복합 코팅 아연도금강판을 제공한다.
The present invention also provides a binuclear composite coated galvanized steel sheet coated with the binuclear composite coating composition of the present invention.

본 발명은 또한 본 발명의 이핵복합 코팅 조성물이 코팅된 아연도금강판을 80 내지 150℃로 경화시킨 이핵복합 코팅 아연도금강판을 제공한다.
The present invention also provides a binuclear composite coated galvanized steel sheet obtained by curing the galvanized steel sheet coated with the binuclear composite coating composition of the present invention at 80 to 150 ° C.

본 발명의 이핵복합 화합물은 강판 코팅 시 치밀한 자기조립 단일막을 형성할 뿐만 아니라 높은 원자가의 티타늄 작용기가 이차적인 자기수복 효과를 발휘함으로써 극박의 작은 부착량으로도 우수한 내식성을 얻을 수 있을 뿐만 아니라 표면 전도성과 가공 윤활성이 우수한 효과가 있다. 상기 이핵복합 화합물이 코팅된 아연도금강판은 크로메이트를 사용해 왔던 방청용이나 도장하도용 크롬-프리 코팅강판으로 사용하기에 적합하다.
The binuclear compound of the present invention not only forms a dense self-assembled monolayer when coating the steel sheet, but also has a high self-healing effect on the titanium atoms of high valence, thereby obtaining excellent corrosion resistance even at a very small adhesion amount, and also providing surface conductivity and It is effective in processing lubricity. The galvanized steel plate coated with the binuclear complex compound is suitable for use as a chromium-precoated steel sheet for rust prevention or paint coating under the use of chromate.

도 1은 본 발명에 따른 아연도금강판에 코팅한 이핵복합 화합물의 자기조립 단일막의 모식도이다.1 is a schematic diagram of a self-assembled monolayer of a binary composite compound coated on a galvanized steel sheet according to the present invention.

이하, 본 발명의 구성을 구체적으로 설명한다.EMBODIMENT OF THE INVENTION Hereinafter, the structure of this invention is demonstrated concretely.

본 발명은 용매 100 중량부에 대하여The present invention is based on 100 parts by weight of the solvent

티타늄-실란 이핵복합 화합물 3 내지 30 중량부;3 to 30 parts by weight of the titanium-silane dinuclear compound;

폴리실리케이트 화합물 1 내지 10 중량부; 및 1 to 10 parts by weight of the polysilicate compound; And

티타늄 방청 화합물 1 내지 10 중량부를 포함하는 이핵복합 코팅 조성물에 관한 것이다.It relates to a binuclear composite coating composition comprising 1 to 10 parts by weight of a titanium antirust compound.

본 발명의 이핵복합 코팅 조성물은 티타늄-실란 이핵복합 화합물, 폴리실리케이트 화합물 및 티타늄 방청 화합물을 포함하는 무기계 코팅 용액으로, 상기 티타늄-실란 이핵복합 화합물 코팅용액은 수용성으로 용액안정성이 우수하고. 냄새가 없을 뿐만 아니라 롤코팅, 스프레이 코팅 및 침적(deeping)코팅이 가능하고, 경화온도가 낮아 일반 열풍으로도 건조가 가능한 장점이 있다.The heteronuclear composite coating composition of the present invention is an inorganic coating solution containing a titanium-silane dinuclear compound, a polysilicate compound, and a titanium rust preventive compound, and the titanium-silane dinuclear compound coating solution is water soluble and has excellent solution stability. Not only is there no smell, roll coating, spray coating and deep coating are possible, and the curing temperature is low, and there is an advantage that it can be dried by a general hot air.

상기 티타늄-실란 이핵 복합 화합물은 하기 화학식 1로 표시되는 화합물일 수 있다:The titanium-silane dinuclear complex compound may be a compound represented by Formula 1 below:

[화학식 1][Formula 1]

[(L1)TiIV(L2)Si(OR)3]
[(L 1 ) Ti IV (L 2 ) Si (OR) 3 ]

상기 식에서,Where

L1은 두 자리 음이온 리간드이고, L 1 is a bidentate anionic ligand,

L2는 알킬아민 고리구조 리간드이며,L 2 is an alkylamine ring structure ligand,

R은 탄소수 1 내지 30의 알킬 치환기를 나타낸다.
R represents an alkyl substituent having 1 to 30 carbon atoms.

상기 화학식 1의 화합물은 구체적으로, The compound of formula (1)

상기 L1 리간드는 펜탄다이오나토(pentanedionato) 두 자리 음이온 리간드로, 1,3-프로판디온, 1,3-펜탄디온 또는 1,1,1,5,5,5-헥사플루오로-2,4-펜탄디온이고, The L 1 ligand is a pentanedionato bidentate anion ligand, 1,3-propanedione, 1,3-pentanedione or 1,1,1,5,5,5-hexafluoro-2,4 -Pentanedione,

L2는 비스(펜탄다이오나토)아미노프로필 [Bis(pentanedionato)aminopropyl]이고,L 2 is bis (pentanedioato) aminopropyl [Bis (pentanedionato) aminopropyl],

R은 탄소수 1 내지 6의 알킬을 나타낼 수 있다.R may represent alkyl having 1 to 6 carbon atoms.

상기 R은 보다 구체적으로 메칠, 에칠, n-프로필, 이소-프로필, 또는 이들의 혼합물일 수 있다.More specifically, R may be methyl, ethyl, n-propyl, iso-propyl, or mixtures thereof.

상기 티타늄-실란 이핵복합 화합물을 아연도금강판에 코팅 시 치밀한 자기조립 단일분자막(self-assembly monolayer)을 형성하여 도금강판의 아연층을 보호하게 되고, 내식성이 우수한 강판을 얻을 수 있다. 한편, 꼬리부분에 포함된 티타늄은 4+의 높은 원자가를 가지고 있어서 도막에 상처가 입었을 경우 Ti(II)로 환원되면서 자기치료효과를 발휘한다. 특히 꼬리부분에 포함된 두 자리 음이온 리간드가 1,1,1,5,5,5-헥사플루오르-2,4-펜탄디온 인 경우 다른 리간드에 비해 가공 시 프레스 윤활성이 우수한 특징이 있다. 이와 같은 이유는 리간드에 포함된 불소원자의 고윤활성에 기인한다. When the titanium-silane dinuclear composite compound is coated on a galvanized steel sheet, a dense self-assembly monolayer is formed to protect the zinc layer of the plated steel sheet, thereby obtaining a steel sheet having excellent corrosion resistance. On the other hand, titanium contained in the tail has a high valency of 4 + , when the coating film is wound, the titanium is reduced to Ti (II) to exhibit a self-healing effect. In particular, when the bidentate anion ligand included in the tail is 1,1,1,5,5,5-hexafluoro-2,4-pentanedione, it has excellent characteristics of press lubricity during processing compared to other ligands. The reason for this is attributable to the high lubrication of the fluorine atoms contained in the ligand.

이와 같은 티타늄-실란 이핵복합 화합물은 3 내지 30 중량부로, 보다 바람직하게는, 5 내지 15 중량부로 포함되는 것이 좋다. 상기 함량이 3 중량부 미만이면 아연도금 층 표면에 자기조립 단일분자막의 형성이 불충분하여 내식성과 밀착성이 저하되며, 30 중량부를 초과하면 분자막의 형성이 고르지 않을 뿐만 아니라 고가의 화합물 사용량이 증가하여 제조원가가 상승하므로 경제성이 떨어지는 문제가 있다.
Such titanium-silane dinuclear compound is 3 to 30 parts by weight, more preferably 5 to 15 parts by weight. If the content is less than 3 parts by weight, the self-assembled monomolecular film is insufficiently formed on the surface of the galvanized layer, thereby reducing corrosion resistance and adhesion. Therefore, the manufacturing cost rises, so there is a problem of low economic efficiency.

또한, 상기 폴리실리케이트 화합물은 도막의 내식성과 표면경도, 소재와의 밀착성 확보를 위해 사용하며, 금속 실리케이트 화합물일 수 있고, 보다 구체적으로, 하기 화학식 2 또는 3으로 표시되는 화합물일 수 있다:In addition, the polysilicate compound is used to ensure corrosion resistance and surface hardness of the coating film, and adhesion to the material, and may be a metal silicate compound, and more specifically, may be a compound represented by the following Chemical Formula 2 or 3:

[화학식 2](2)

MSiO3
MSiO 3

[화학식 3](3)

M'2Si5O11
M ' 2 Si 5 O 11

상기 식에서, Where

M은 Li, Na 또는 K이고,M is Li, Na or K,

M'는 Li 또는 Na를 나타낸다.
M 'represents Li or Na.

상기 티타늄 방청 화합물은 티타늄 카보네이트, 이소프로필디트리에탄올아미노 티타네이트, 락틱산 티타늄킬레이트, 티타늄 아세틸아세토네이트, 또는 이들의 혼합물을 사용할 수 있다.The titanium rust preventive compound may use titanium carbonate, isopropylditriethanolamino titanate, titanium chelate lactate, titanium acetylacetonate, or a mixture thereof.

또한, 본 발명의 이핵복합 코팅 조성물은 티타늄-실란 이핵복합 화합물, 폴리실리케이트 화합물 및 티타늄 방청 화합물을 용매에 녹여 사용할 수 있다.In addition, the heteronuclear composite coating composition of the present invention may be used by dissolving a titanium-silane dinuclear compound, a polysilicate compound, and a titanium rust preventive compound in a solvent.

상기 용매로 물, 알코올, 또는 이들의 혼합물을 사용할 수 있다. 보다 구체적으로, 상기 용매는 물 100 중량부에 대하여 3 내지 10 중량부의 알코올을 포함하는 수용액을 사용할 수 있다.
Water, alcohols, or mixtures thereof may be used as the solvent. More specifically, the solvent may be used an aqueous solution containing 3 to 10 parts by weight of alcohol with respect to 100 parts by weight of water.

본 발명은 또한 본 발명의 이핵복합 코팅 조성물이 코팅된 이핵복합 코팅 아연도금강판에 관한 것이다. The present invention also relates to a binuclear composite coated galvanized steel sheet coated with the binuclear composite coating composition of the present invention.

상기 이핵복합 코팅 조성물은 아연도금강판의 일면 또는 양면에 극박의 치밀한 자기조립 단일막 구조의 코팅층을 형성할 수 있다.The binuclear composite coating composition may form a coating layer of ultrathin dense self-assembled monolayer structure on one or both sides of the galvanized steel sheet.

상기 코팅층은 강판 1m2 당 0.1 내지 1.0g의 함량으로 코팅하여 이루어질 수 있으나, 형성되는 코팅층의 용도에 따라 적절하게 선택할 수 있어 특별히 제한하는 것은 아니다.The coating layer may be formed by coating in an amount of 0.1 to 1.0 g per 1 m 2 of steel sheet, but may be appropriately selected depending on the use of the coating layer to be formed is not particularly limited.

상기 이핵복합 코팅 조성물을 적용하는 대상 강판으로는 아연계 도금강판으로서, 예를 들면, 전기아연도금강판(EG, Electrogalvanized Steel Sheet), 합금화 전기아연도금 강판(Zn-Ni 혹은 Zn-Fe), 용융아연도금강판(GI, Galvanized Steel Sheet), 또는 합금화 용융아연도금강판(GA, Galvanealed Steel Sheet) 등을 들 수 있다.
The target steel sheet to which the binuclear composite coating composition is applied may be a zinc-based plated steel sheet, for example, an electrogalvanized steel sheet (EG), an alloyed galvanized steel sheet (Zn-Ni or Zn-Fe), or molten steel. Galvanized steel sheets (GI) or galvanized steel sheets (GA).

본 발명은 또한 본 발명의 이핵복합 코팅 조성물이 코팅된 아연도금강판을 80 내지 150℃로 경화시킨 이핵복합 코팅 아연도금강판에 관한 것이다.The present invention also relates to a binuclear composite coated galvanized steel sheet obtained by curing a galvanized steel sheet coated with the binuclear composite coating composition of the present invention at 80 to 150 ° C.

상기 이핵복합 코팅 조성물이 코팅된 아연도금강판을 강판 도달온도(Peak Metal Temperature, PMT) 80 내지 150?로 소부 건조하고 수냉함으로써 본 발명의 이핵복합 조성물이 코팅된 강판을 제조할 수 있다. The galvanized steel sheet coated with the binuclear composite coating composition may be fired to dry at 80 to 150 ° C. in a steel plate attained temperature (Peak Metal Temperature, PMT) and water cooled to manufacture a steel sheet coated with the binuclear composite composition of the present invention.

상기 건조된 코팅층은 0.1 내지 2㎛의 두께 및 강판 1m2 당 0.1 내지 1.0g의 부착량을 가질 수 있다. 이와 같은 코팅층의 두께 및 부착량은 형성되는 코팅층의 용도에 따라 적절하게 선택할 수 있어 특별히 제한하는 것은 아니다.
The dried coating layer may have a thickness of 0.1 to 2 ㎛ and an adhesion amount of 0.1 to 1.0 g per 1 m 2 of the steel sheet. The thickness and deposition amount of such a coating layer can be appropriately selected depending on the use of the coating layer to be formed, and is not particularly limited.

이하, 본 발명에 따르는 실시예 통하여 본 발명을 보다 상세히 설명하나, 본 발명의 범위가 하기 제시된 실시예에 의해 제한되는 것은 아니다.
Hereinafter, the present invention will be described in more detail with reference to Examples of the present invention, but the scope of the present invention is not limited by the following Examples.

<제조예 1> 내지 <제조예 36> 이핵복합 수지코팅 조성물의 제조Preparation Example 1 to Production Example 36 Preparation of the Nuclear Composite Resin Coating Composition

이핵복합 화합물(Gelest Inc.)과 리튬 폴리실리케이트(Dupont Chemical Co. 제조) 및 티타늄 화합물(Dupont Chemical Co.제 제조)을 첨가한 다음 3 중량부의 이소프로필 알코올 수용액을 첨가하여 제조하였다. It was prepared by adding a dinuclear compound (Gelest Inc.), lithium polysilicate (manufactured by Dupont Chemical Co.) and a titanium compound (manufactured by Dupont Chemical Co.), followed by 3 parts by weight of an aqueous solution of isopropyl alcohol.

상기 조성물을 제조예 1 내지 36과 같이 제조하였다. 각 제조예의 각 성분의 함량은 표 1에 나타낸 바와 같다. 제조예 1 내지 27은 이핵복합 화합물의 치환기가 L1=pentadionato(-1) 리간드인 경우이며, 제조예 28 내지 36은 이핵복합 화합물의 치환기가 L1=1,1,1,5,5,5-hexafluoro-2,4-pentadionato(-1) 리간드인 경우이다.The composition was prepared as Preparation Examples 1 to 36. The content of each component of each preparation example is as shown in Table 1. Preparation Examples 1 to 27 are the case where the substituent of the heteronuclear compound is L 1 = pentadionato (-1) ligand, and Preparation Examples 28 to 36 are the substituents of the heteronuclear compound L 1 = 1,1,1,5,5, In the case of 5-hexafluoro-2,4-pentadionato (-1) ligand.

Figure 112011103222411-pat00001
Figure 112011103222411-pat00001

<실시예 1> 내지 <실시예 37> 코팅 강판의 제조<Example 1> to <Example 37> Preparation of the coated steel sheet

상기 제조예 1 내지 36에서 얻어진 이핵복합 조성물을 롤-코트 도장 시험기를 사용하여 전기아연도금 강판(EG, 도금량 편면 20g/㎡)에 코팅을 실시하고, 자동 배출형 열풍 건조 로에서 강판도달온도(Peak Metal Temperature) 120℃로 소부 건조한 후, 수냉하여 실시예 1 내지 36의 코팅강판을 제조하였다. The binuclear composite composition obtained in Production Examples 1 to 36 was coated on an electrogalvanized steel sheet (EG, 20g / m2 of plating amount one side) using a roll-coat coating tester, and the steel sheet reaching temperature (Peak) in an automatic discharge hot air drying furnace. Metal Temperature) After baking at 120 ° C., water-cooled to prepare the coated steel sheet of Examples 1 to 36.

얻어진 강판의 코팅층 두께는 0.1 내지 2 ㎛이고, 부착량은 0.1 내지 1.0g/㎡이었다.
The coating layer thickness of the obtained steel plate was 0.1-2 micrometers, and the adhesion amount was 0.1-1.0 g / m <2>.

<비교예 1>&Lt; Comparative Example 1 &

기존의 인산염 하지처리 내지문 강판(POSCO사제)으로서, 인산염 부착량이 1.6g/㎡이며, 내지문 수지 부착량이 1.2g/㎡인 강판을 사용하였다.
As a conventional phosphate base treatment anti-fingerprint steel plate (manufactured by POSCO), a steel plate having a phosphate adhesion amount of 1.6 g / m 2 and a fingerprint resin adhesion amount of 1.2 g / m 2 was used.

<비교예 2>Comparative Example 2

1-코트 내지문 강판으로서 수지 부착량이 1.0g/㎡인 표면 전기전도성 내지문 강판(POSCO사제)을 사용하였다.
As the 1-coat anti-fingerprint steel sheet, a surface electroconductive anti-fingerprint steel plate (manufactured by POSCO) having a resin adhesion amount of 1.0 g / m 2 was used.

상기 실시예 1 내지 36과 비교예 1 및 2로부터 제조된 강판의 특성 및 각각의 강판에 대하여 평가한 평판 및 가공부 내식성, 가공성, 표면전기전도도 및 마찰계수에 대한 결과를 표 2에 나타내었다. 한편, 각 평가 항목에 대한 평가 방법 및 평가 기준은 다음과 같다.
Table 2 shows the properties of the steel sheets prepared from Examples 1 to 36 and Comparative Examples 1 and 2, and the results of corrosion resistance, workability, surface electrical conductivity, and coefficient of friction of the flat and processed portions evaluated for each steel sheet. In addition, the evaluation method and evaluation criteria for each evaluation item are as follows.

(성능평가)(Performance evaluation)

(1) 내식성(1) Corrosion resistance

상기 실시예 및 비교예에서 제조한 시편 및 비교예의 시편을 염수분무장치(일본공업표준 시험법 JIS E2731)를 이용하여 35℃, 5% NaCl, 분산압 1kg/㎡ 의 분사압력으로 분사한 후 5% 백청 발생까지의 소요시간으로 평가하였다. 가공부 내식성은 시편을 에릭센(Ericksen) 25㎜φ, 7㎜ 가공하여 상기 조건의 염수분무실험으로 평가하였다. 평점은 5% 백청이 발생까지의 시간으로 평가하였다. 가공부 내식성 평가는 평판 내식성의 절반일 때의 백청발생 여부로 평가하였다.
The specimens prepared in Examples and Comparative Examples and Comparative Examples were sprayed at a spray pressure of 35 ° C., 5% NaCl, and a dispersion pressure of 1 kg / m 2 using a salt spray device (JIS E2731). The time required until the occurrence of% white rust was evaluated. The corrosion resistance of the processed part was evaluated by the salt spray test under the above conditions by processing 25 mmφ and 7 mm of Ericksen. The rating was evaluated by the time until the occurrence of 5% white rust. The corrosion resistance evaluation of the processed part was evaluated by the occurrence of white rust when half the plate corrosion resistance.

(2) 가공성(2) processability

수지피막 처리된 강판의 표면을 180°구부린 다음 바이스에 넣어서 평면이 될 때까지 조인다(0T-벤딩(bending) 실시). 구부러진 도막을 20배 확대경으로 관찰하여 수지도막의 크랙 유무 및 도막에 스카치 테이프를 부착시킨 후 도막을 박리시켰을 때의 테이프에 박리된 상태를 관찰하여 평가한다. The surface of the resin coated steel sheet is bent 180 ° and placed in a vise and tightened until it is flat (0T-bending). The bent coating film was observed with a magnifier of 20 times, and the resin coating film was cracked and the scotch tape was attached to the coating film.

[평가기준][Evaluation standard]

◎: 0T 벤딩시 크랙 및 박리없음◎: No cracking or peeling during 0T bending

○: OT 벤딩시 도막 크랙은 보이지만 박리는 없음○: coating film cracks but no peeling during OT bending

△: OT 벤딩시 크랙 및 도막 박리
Δ: crack and coating film peeled off during OT bending

(3) 표면 전기전도성(3) surface electrical conductivity

전기전도도는 LORESTA GP(미쯔비씨㈜) 기기를 이용하여 저항값을 측정하여 평가하였다. Electrical conductivity was evaluated by measuring the resistance value using a LORESTA GP (Mitsubishi Corp.) instrument.

[평가기준] [Evaluation standard]

◎: 저항≤0.1mΩ◎: resistance≤0.1mΩ

○: 0.1mΩ<저항<10mΩ○: 0.1 mΩ <resistance <10 mΩ

△: 저항≥10mΩ
△: resistance≥10mΩ

(4) 마찰계수(4) coefficient of friction

마찰계수는 Draw bead 마찰계수 측정방법으로 무도유 상태에서 Load 하중 600kgf, 비드속도 1000mm/min 에서 이동거리를 100mm로 하여 측정하였다. Friction coefficient was measured by Draw bead friction coefficient measuring method with 600mm of load load and 1000mm / min of bead speed in unoiled condition.

Figure 112011103222411-pat00002
Figure 112011103222411-pat00002

표 2에 나타난 바와 같이 발명재(300 내지 600mg/m2)는 기존 비교재(1000 내지 1200mg/m2)와는 달리 도막부착량이 작은 경우에도 우수한 내식성을 나타냈다. 그러나 낮은 부착량에도 불구하고 가공성이 우수한 특징이 있다. 이와 같은 우수한 특성은 이핵복합 화합물이 자기조립에 의한 치밀한 도막구조를 가지기 때문이다.
As shown in Table 2, the inventive material (300 to 600mg / m 2 ) exhibited excellent corrosion resistance even when the coating amount was small, unlike the conventional comparative material (1000 to 1200mg / m 2 ). However, despite the low adhesion amount, there is a feature of excellent workability. This excellent characteristic is because the heteronuclear complex compound has a dense coating structure by self-assembly.

Claims (14)

용매 100 중량부에 대하여
티타늄-실란 이핵복합 화합물 3 내지 30 중량부;
폴리실리케이트 화합물 1 내지 10 중량부; 및
티타늄 방청 화합물 1 내지 10 중량부를 포함하고,
상기 티타늄-실란 이핵복합 화합물은 하기 화학식 1로 표시되는 화합물인 이핵복합 코팅 조성물:
[화학식 1]
[(L1)TiIV(L2)Si(OR)3]

상기 식에서,
L1은 두 자리 음이온 리간드이고,
L2는 알킬아민 고리구조 리간드이며,
R은 탄소수 1 내지 30의 알킬 치환기를 나타낸다.
Per 100 parts by weight of solvent
3 to 30 parts by weight of the titanium-silane dinuclear compound;
1 to 10 parts by weight of the polysilicate compound; And
1 to 10 parts by weight of the titanium antirust compound,
The titanium-silane dinuclear compound is a binuclear composite coating composition is a compound represented by the following formula (1):
[Formula 1]
[(L 1 ) Ti IV (L 2 ) Si (OR) 3 ]

In this formula,
L 1 is a bidentate anionic ligand,
L 2 is an alkylamine ring structure ligand,
R represents an alkyl substituent having 1 to 30 carbon atoms.
삭제delete 제1항에 있어서,
L1 리간드는 1,3-프로판디온, 1,3-펜탄디온 및 1,1,1,5,5,5-헥사플루오로-2,4-펜탄디온으로 이루어진 군에서 선택되는 하나 이상인 이핵복합 코팅 조성물.
The method of claim 1,
L 1 ligand is at least one dinuclear complex selected from the group consisting of 1,3-propanedione, 1,3-pentanedione and 1,1,1,5,5,5-hexafluoro-2,4-pentanedione Coating composition.
제1항에 있어서,
L2 리간드는 비스(펜탄다이오나토)아미노프로필을 포함하는 이핵복합 코팅 조성물.
The method of claim 1,
L 2 ligand is a binuclear complex coating composition comprising bis (pentanedioato) aminopropyl.
제1항에 있어서,
R은 탄소수 1 내지 6의 알킬을 나타내는 이핵복합 코팅 조성물.
The method of claim 1,
R is a heteronuclear coating composition of the alkyl having 1 to 6 carbon atoms.
제1항에 있어서,
폴리실리케이트 화합물은 하기 화학식 2 또는 3으로 표시되는 이핵복합 코팅 조성물:
[화학식 2]
MSiO3

[화학식 3]
M'2Si5O11

상기 식에서,
M은 Li, Na 또는 K이고,
M'는 Li 또는 Na를 나타낸다.
The method of claim 1,
Polysilicate compound is a heteronuclear composite coating composition represented by the formula
(2)
MSiO 3

(3)
M ' 2 Si 5 O 11

In this formula,
M is Li, Na or K,
M 'represents Li or Na.
제1항에 있어서,
티타늄 방청 화합물은 티타늄 카보네이트, 이소프로필디트리에탄올아미노 티타네이트, 락틱산 티타늄킬레이트 및 티타늄 아세틸아세토네이트로 이루어진 군으로부터 선택된 하나 이상인 이핵복합 코팅 조성물.
The method of claim 1,
The titanium antirust compound is at least one selected from the group consisting of titanium carbonate, isopropylditriethanolamino titanate, titanium chelate lactate and titanium acetylacetonate.
제1항에 있어서,
용매는 물, 알코올, 또는 이들의 혼합물인 이핵복합 코팅 조성물.
The method of claim 1,
And the solvent is water, alcohol, or a mixture thereof.
제8항에 있어서,
용매는 물 100 중량부에 대하여 3 내지 10 중량부의 알코올을 포함하는 수용액인 이핵복합 코팅 조성물.
9. The method of claim 8,
The solvent is a heteronuclear composite coating composition which is an aqueous solution containing 3 to 10 parts by weight of alcohol with respect to 100 parts by weight of water.
제1항의 이핵복합 코팅 조성물이 코팅된 이핵복합 코팅 아연도금강판.
A binuclear composite coated galvanized steel sheet coated with the binuclear composite coating composition of claim 1.
제10항에 있어서,
이핵복합 코팅 조성물은 강판 1m2 당 0.1 내지 1.0g의 함량으로 코팅되는 이핵복합 코팅 아연도금강판.
The method of claim 10,
The binuclear composite coating composition is a binuclear composite coating galvanized steel sheet coated in an amount of 0.1 to 1.0g per 1 m 2 of the steel sheet.
제10항에 있어서,
아연도금강판은 전기아연도금강판, 합금화 전기아연도금강판, 용융아연도금강판 또는 합금화 용융아연도금강판인 이핵복합 코팅 아연도금강판.
The method of claim 10,
Galvanized steel sheet is a binuclear composite coated galvanized steel sheet, which is an electrogalvanized steel sheet, an alloyed electrogalvanized steel sheet, a hot dip galvanized steel sheet or an alloyed hot dip galvanized steel sheet.
제10항의 아연도금강판을 80 내지 150℃로 경화시킨 이핵복합 코팅 아연도금강판.
A binuclear composite coated galvanized steel sheet obtained by curing the galvanized steel sheet of claim 10 at 80 to 150 ° C.
제13항에 있어서,
이핵복합 코팅은 0.1 내지 2 ㎛의 두께를 갖는 이핵복합 코팅 아연도금강판.
The method of claim 13,
Dinuclear composite coating is a binuclear composite coating galvanized steel sheet having a thickness of 0.1 to 2 ㎛.
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KR20110020105A (en) * 2009-08-21 2011-03-02 주식회사 포스코 Composition for surface treatment, preparation method thereof and surface-treated steel plate using the same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040103565A (en) * 2003-05-29 2004-12-09 주식회사 포스코 High anticorrosive coating solution for zinc coated steel sheet and the zinc coated steel sheet therefrom
KR20060124426A (en) * 2005-05-31 2006-12-05 주식회사 포스코 Anticorrosive coating composition and eletro-galvanized steel sheet coated therewith
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